<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
    
    <style>
        body{
            width: 1000px;
        }
        body>div{
            width: 100px;
            height: 100px;
            background-color: black;
            border: 1px solid black;
            border-radius: 20%;
            display: flex;
            float: left;
            margin-left: 20px;
            
        }
        .dot{
            width: 25px;
            height:25px;
            background: white;
            border: 1px solid white;
            border-radius: 50%;
        }
        .b{
            justify-content: center;
        }
        .c{
            justify-content: end;
        }
        .d{
            justify-content: space-between;
        }
        .e{
            flex-direction: column;
            justify-content: space-between;
            align-items: flex-end;
        }
        .f{
            flex-direction: column;
            justify-content: space-between;
        }
        .f .dot:nth-child(2){
            align-self: center;
        }
        .f .dot:nth-child(3){
            align-self: end;
        }
        .g>.one{
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .g{
            justify-content: space-between;
        }
        .g .one:nth-child(2){
            align-self: center;
        }
    </style>   

<body>
    <div class="a">
        <div class="dot"></div>
    </div>
    <div class="b">
        <div class="dot"></div>
    </div>
    <div class="c">
        <div class="dot"></div>
    </div>
    <div class="d">
        <div class="dot"></div>
        <div class="dot"></div>
    </div>
    <div class="e">
        <div class="dot"></div>
        <div class="dot"></div>
    </div>
    <div class="f">
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
    </div>
    <div class="g">
        <div class="one">
            <div class="dot"></div>
            <div class="dot"></div>
        </div>
        <div class="one">
            <div class="dot"></div>
        </div>
        <div class="one">
            <div class="dot"></div>
            <div class="dot"></div>
        </div>
    </div>
</body>
</html>